Cadalyst (dead link) reviews CADVault for AutoCAD and highly recommends CADVault with comment that CADVault is an excellent tool for securing AutoCAD drawings. It provides an effective method for securing part or all of a drawing while maintaining an option for the recipient to view and print secured drawing objects. CADVault is easy to use, and I found the product support exceptional. CADVault could be improved with a batch processing method that would allow non-programmers to process multiple drawings.